"he always follows the latest fads" "it was all the rage that season"
例句
用作名词(n.)
Direct investment can become a fad just like any other activity of an economic, social, or cultural character.就象经济，社会或文化性质的任何其他活动一样，直接投资也可成为一种一朝风行的时尚。
This can lead to thriftiness to the point of denying yourself pleasure, or embracing some health fad to ward of disease.也许这会导致你节俭到否定自我愉快感或拥抱某个健康时尚来避开疾病。
